Add NUMA specific properties to guest's device tree to boot a multi-node
guests. This patch adds the following properties:

ibm,associativity
ibm,architecture-vec-5
ibm,associativity-reference-points

With this, it becomes possible to use -numa option on pseries targets.
Signed-off-by: NBharata B Rao <bharata@linux.vnet.ibm.com>
Signed-off-by: NDavid Gibson <david@gibson.dropbear.id.au>
Signed-off-by: NAlexander Graf <agraf@suse.de>